Tilting-chair.



H. W. BOLINS.

TILTING CHAIR. APPLICATION FILED JUNE I6. 19I5.

H. W. BOL'ENS.

TILTING CHAIR.

APPLICATION f1I.EDIuNE16.I915.

l ,245, l 81 Patented Nov. 6, 191?.

2 SHEETS-SHEET 2.

kso

entran srafrns rarest ernten, i

HARRY W, BOLEN'S, OF PORT WASHINGTON, WISCONSIN'.

TILTING-CHAIR.

To all who/m, t may concern Be it known that I, HARRY W. BoLENs, a citizen of the United States, residing at Port Washington, in the county of Ozaukee and State of Visconsin, have invented a new and useful Tilting-Chair, of which the following is a specification.

This invention relates to improvements in tilting-chairs, 4having A particular reference to that part thereof commonly termed the iron*in reality, the adjustment for supporting, raising, and lowering the seat. A very popular style of iron now in genera-l use, includes a sheet-metal stretcher or bridge, made usually more or less of inverted U-shape, the same being suitably mounted upon the yoke, and embodying or carrying the stops for limiting the tilting movement of the sea-t, the tension-spring and spider-arms. AThe spider-arms have, heretofore, been applied either to the tops of the stretcher or bridge or to the corners, whereby the attaching-ends of the arms occur at an elevation abovethe horizontal plane of the stretcher or bridge. Vhen thus mounted, the iron as a whole occupied very considerable space, to allow for which, the chair-base, by which I mean the clawsor legs, had to be made squatty and unsightly and out of symmetry with the remainder of the chair. One of the objects of my invention is, therefore, to overcome this Vdefect by so locating and disposing the spider-arms that while yet retaining the same graceful outline of design, they terminate or have their attaching-ends occur in substantially the same horizontal plane as the upper Vsurface of the stretcher or bridge. This arrangement materially decreases the height lof the. iron, with the result, that the chairbase may be madein proper proportion and the chair-seat when lowered will notk be abnormally high. Y

A further object of the invention is to utilize a rigid supporting-post-that is, a post rigid with the chair-base-substituting the post for the usually-employed threaded post working in the chair-base the stretcher or bridge and the yoke carrying thesame being mounted for vertical movement on the rigid post, whereby to secure proper relevation of the chair-seat, the whole, with the exception of the post, being capable of freely revolving on the chair-base.` By substituting the rigid guide-post for the threadedpost, looseness of the latter in the chair- Specication of Letters Patent,

Application filed J une 16, 1915.

Patented Nov. 6,191 7.

Serial No. 34,411.

base, as caused by wear, is avoided, andthe life of the chair `greatly increased.

Other, though minor, objects of my invention, will hereinafter appear, and the novel features thereof will be'particularly pointed out in the claims.

Referring to the drawings-f Figure l is a vertical, central, longitudinal sectional view, partly in side elevation, of a chair-iron embodying my invention;

Fig. 2 is a top plan view of the same;

Fig. 3 is a fr-ont elevation of the iron, parts being shown in vertical section; and,

Fig. 4 is a rear elevation of the iron, parts being shown in vertical section.

Similar numerals of reference indicate similar parts in all the ligures of the drawings.

The chair-base 5, may be of any preferred design, such forming no part of my invention, and secured to it and rising therefrom, is a rigid cylindrical guide-post 10. This post, it will be understood, may be fastened to the chair-base 5, as for instance, by a pin 6, the post extending down into a bore formed ink the base, or, it may be secured to the base otherwise, or formed integral with the metal part of the base. A ball-race 7, may be formed annularly `aboutthe post 10, the race being formed in the upper fside of ametal plate 8, that caps the base 5. Swiveled about the post, above the cap, and having a companion ball-race 16, formedpin its underside, is a turn-table 15, the same being preferably formed circular, and between these twothe cap 8 and the turn-table 15, within the races-is a series of anti-friction balls 17. f

The carrier-yoke 20, is of substantially right angular shape, and embodies avertically bored elongated hub 21, mounted to slide upon the rigid guide-postand upon which it is also capable of freely rotating; a rear vertical extension 22 rising to a point slightly above the hub 21; and at the opposite side of the hub or front, a forward hori- Zontal extension 23. f

In the latter extension there is formed a vertically disposed threaded vopening 24, the threads of this opening. engaging similar threads formed on an adjusting-screw 25, the lower end of which enters a plain opening 19, formed inthe turn-table 15. The lower end of this screw is cylindrical, forming a head 26, swivcled inthe opening 19, and at about its middle, may be formed with Lui an annular groove Q6, a retaining-screw 27, passing through the side of the turn-table and engaging the groove 26, whereby, while the adjusting-screw 25 is free to rotate, yet it cannot be withdrawn without first withdrawing the screw 27. immediately above the head 26, the adjusting-screw is provided with a milled-nut 28, the same being fixed upon the adjusting-screw and adapted to rotate the same whereby to feed the yoke 20 up or down, as the case may ie, upon the guide-post l0.' ln this manner l provide for a raising and lowering of the yoke, and the chainseat carried thereby, whereby the latter may be given the desired elevation, the whole being capable of lrevolving with the turn-table 15in a manner obvious.

The stretcher 30, is preferably of substantially el-shape, comprising in the present instance, as it does, the opposite depending side-ears 31, and the upper connecting crosspiece 32. The ears embrace the yoke, and through the latter and the ears passes a transverse pintle 33, whereby the -stretcher becomes pivotally mounted upon the yoke. To provide for the passage of the upper end of the guide-post- 10, the front edge of the cross-piece 32 of the stretcher may be recessed as at 34:, and front and rear depending stop-lugs 35 and 3G, respectively, may be punched from the cross-piece 32 and lie in front and in rear of the rear vertically projecting extension 22 of the yoke, the upper end of which extension occurs directly under the aforesaid cross-piece.

The extension 22 of the yoke is provided with a transverse perforation 37, over the front of which is the usual washer 38, perforated to receive the tension-bolt 39, which also passes through the perforation 37 of the extension Q2. The rear end of this bolt 39 is provided with a hand-wheel or nut LO, and between the same and the flange 38, of the yoke, there is mounted on the bolt, the usual adjusting-spring all, these parts being of the usual construct-ion, though the bolt is disposed rearwardly instead of forwardly, as is usual, whereby to avoid the sleeve Q1 of the yoke. yThis arrangement, of course, brings the hand-wheel et() at the rear instead of at the front of the adjustment.

The spider-armsd, are bowed and formed of sheet-metal, all in the usual manner, and terminate in the perforated attaching-ends 4.3. l-leretofore, suoli arms have been located at the upper angles of the stretcher, the angles of the arms conforming more or 4less with the corners or angles of the stretcher. This arrangement, as heretofore stated, caused the attaching-ends to occur at a point above the stretcher, and hence, the chair seat was likewiseelevated to the same ef;- tent above the adjustment. ln the presentinstance, l reverse the spider-arms-that is arrange the angles outwardly,and rivet neaeaei the vertical flanges 4:4 thereof to the depending side-ears 3l of the stretcher, well down upon theV same, as indicatedfat 45. This arrangement secures a two-fold advantage, namely, it lowers the attachingends of the spider-arms until they are .in the same horizontal plane of the stretcher, and, since the pintle also passes through the vertical flange el of the arms, this arrangement reinforces the side-ears of the stretcher by practically doubling the thickness, and this too, at the points where the greatest strain and wear occur in the stretcher.

ln this manner, and by my invention, it will be seen that the adjustment resulting is most compact and strong and capable of long and hard usage without the parts working loose; that Agreater rigidity is given the stretcher without adding material, weight, or cost; and finally, the chair-seat issupported at'such a distance above the licor as good design dictates without sacriiicing the appearance of the chair-base.

Having described my invention, what l claim, is;

l. The combination, in a chair, of a base, a fixed guide-post rising vertically therefrom, a turn-table swiveled on the post and freely rotatable on the base, a vertically movable yoke substantialy right angular in shape and consisting of an intermediary hub or sleeve slidably mounted on said post and at one side of the hub or 'sleeve having a front horizontalextension and lat the opposite side a vertical extension, means carried by the turn-table and connected to the front horizontal extension of the yoke whereby to adjust the yoke, and a chair-seat supporting stretcher mounted upon the vertical eXtension of said yoke.

E3. The combination, in a tilting and swiv# eling chair, of a base, a fixed guide-post rising vertically therefrom, a turn-table swiveled on the post and rotatable onthe base,

a yoke having an intermediary hub mounted and adapted to vslide vertically upon the post, said yoke having in front of the hub a horizontally disposed extension provided with a threaded opening and in rear of the hub a vertical extension, an adjusting-screw having its lower end swiveled in the turntable and its upper end 4threaded in the opening in the horizontal extension of the yoke, an operating-nut carried by the adjustingescrew, an inverted U-shaped stretcher bridging the yoke in rear of the hub thereof, a transverse pintle connecting the depending sides of the stretcher and the yoke in rear of its hub, stops Vdepending from the stretcher in front and inV rear of the vertical extensiony of the yoke, whereby to limit. the tilting movements of the stretcher, spider-arms carried by the stretcher, anda tension-device between the stretcher and said vertical extension of the yoke whereby to hold the rear stop of the stretcher nori mally in contact with the vertical extension of the yoke.

3. The combination, in a tilting andswiveling chair, of a base, a fixed guide-post rising vertically therefrom, a turn-table swiveled on the post and rotatable on the base, a yoke having an intermediary hub mounted and adapted tc slide vertically upon the post, said yoke having in front of the hub a horizontally disposed extension provided with a threaded opening and in rear of the hub a vertical extension having a transverse opening, an adjusting-screw having its lower end swiveled in the turntable and its upper end threaded in the horizontal extension of the yoke, an operating nut carried by the adjusting-screw, an inverted U-shaped stretcher bridging the yoke in rear 0f the hub thereof, a transverse pintle connecting the depending sides of the stretcher and the yoke in rear of the hub, stops depending from the stretcher in front and in rear of the vertical extension of the yoke, whereby to limit the tilting movements of the stretcher, spider-arms carried by the stretcher, a bridge-piece carried by the stretcher, a threaded bolt passed through the bridge-piece and through the opening in the vertical extension of the yoke and having its head between the same and the hub7 a hand-wheel on the outer end of the bolt, and a tension-spring interposed between the hand-wheel and the vertical extension of the yoke.

et. In a tilting-chair, the combination therein, of a substantially U-shaped stretcher and its adjustable support, and opposite spider-arms secured to the sides of the stretcher and having their attaching-ends occurring in substantially the same horizontal plane as the upper side of the stretcher.

5. In a tilting-chair, the combination therein, of a substantially inverted U-shaped stretcher and its adjustable support, and opposite spider-arms riveted to and reinforcing the sides of the stretcher and having their attaching-ends occurring in substantially the same horizontal plane as the upper side of the stretcher.

6. In a tilting-chair, the combination therein, of a substantially inverted U-shaped stretcher and its adjustable support, and opposite spider-arms formed of angle-iron, the angles of the arms being outwardly disposed and the vertical portions of the arms being rigidly attached to and reinforcing the sides of the stretcher below the top thereof whereby the attaching-ends of the spiderarms occur in substantially the same horizontal plane as said upper side of the stretcher.

7. In a tilting-chair, the combination therein, of a yoke, a vertically adjustable support therefor, an inverted U-shaped stretcher embracing the yoke, a transverse pintle passing through the yoke and the depending sides of the stretcher, means for yieldingly holding the stretcher upon the yoke, and opposite spider-arms, angular in cross-section and having their vertical portions arranged against the depending sides of the stretcher and riveted thereto and receiving the ends of the pintle, said spiderarms having their angles outwardly disposed and their attaching-ends occurring in substantially the same horizontal plane as the upper sivde of the stretcher.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HARRY W. BOLENS.

Vitnesses:

OLAF ELTON, A. R. BOERNER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of :Patents` Washington, D. G. 

